Multiple choice Which horcrux was Bellatrix Lestrange hiding in her vault? Marvolo Gaunt's Ring Rowena Ravenclaw's Diadem Hufflepuff's Cup Tom Riddle's Diary Reveal answer Fill a bubble to check yourself C Correct answer Explanation Bellatrix Lestrange kept Hufflepuff's Cup in her Gringotts vault, believing it to be a safe place for such a precious object.